Of the community cases announced on Sunday (May 16 2021), 18 are currently unlinked. - The Straits Times/ANN SINGAPORE, May 16 (Reuters): Singapore's health ministry on Sunday preliminarily confirmed 38 locally transmitted Covid-19 cases, the highest daily number since mid-September, as the city-state returned to the strictest curbs on gatherings since a coronavirus lockdown last year. Singapore has reported more than 61,000 virus cases, with the bulk linked to outbreaks in foreign worker dormitories, and 31 deaths. While none of Sunday's new cases are in the dormitories, they are the highest number of local infections outside of the dormitories in a year. The Asian trade and financial hub of 5.7 million people had until recently been reporting almost zero or single-digit daily infections locally for months.